ответить на два вопроса. does denzil play with alice? ответ да. do the children play in the school playground? ответ нет.

Yes, he does.

No, they do not.

Если краткие ответы:
Yes, he does.
No, they don’t

Если полные ответы:
Yes, he does. Denzil plays with Alice.
No, they don’t. The children don’t play in the school playground.